名词
中文翻译：内圈
同义词：
['inner layer', 'inner winding例句：1. The inner coil of the motor is where the electrical current flows.（电机的内圈是电流流动的地方。）']
例句：
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1. The inner coil of the motor is where the electrical current flows.
电机的内圈是电流流动的地方。
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2.The inner coil was designed to reduce friction and improve efficiency.
内圈的设计旨在减少摩擦并提高效率。
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3. The inner coil is crucial for maintaining the proper balance of the machine.
内圈对于保持机器平衡至关重要。